Gineyea BSA Bottom Bracket Ceramic Bearing 24mm 29mm Spindle 68mm 73mm 100mm 120mm For MTB Road Bike

GINEYEA BB51/BB91 Threaded Bottom Bracket - High-Strength Aluminum Alloy & Sealed Ceramic Bearings for MTB/Road Bikes

Upgrade your bike's performance with GINEYEA's premium threaded bottom bracket - precision-engineered for smooth, durable, and waterproof operation on mountain/road bikes.

Key Features

Universal Threaded Design: Fits BSA-standard 68/73/100/120mm bottom bracket shells (BB51/BB91 models), compatible with 24mm/29mm crank axles.

Sealed Ceramic Bearings: Waterproof, rust-proof, and low-friction - reduces wear, extends lifespan, and ensures silent, efficient pedaling.

High-Strength Aluminum Alloy: Lightweight yet robust construction (≈102.8g) resists deformation under heavy torque.

Easy Installation: Clear L/R (left/right) markings + arrow indicators for quick, tool-friendly setup (no special tools required).

Specifications

Brand: GINEYEA

Models: BB51-24 (24mm axle), BB51-29 (29mm axle), BB91K (BSA24 ceramic)

Material: Aluminum alloy + sealed ceramic bearings

Weight: ≈93-102.8g (varies by model)

Compatibility: MTB, road bikes, fat bikes with BSA-threaded bottom brackets.

Why Choose GINEYEA?

Precision Engineering: Heat-treated for HRC43+ hardness - withstands extreme riding conditions.

Low Maintenance: Sealed design keeps dirt/moisture out, minimizing upkeep.

Global Standard: Meets BSA threading specs (BC1.37x24T) for universal fitment.

Ideal for cyclists seeking reliable, long-lasting bottom bracket performance - whether commuting, touring, or tackling rugged trails!

NOTE: BB91 bottom bracket only available with steel bearing at present, ceramic bearing version is not in stock. Please contact customer service to confirm before placing order.